5d6441cca42e93d2697dee285c6636a9292dfd8c9e2414aea7ec07b84758d2f4

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/12/2023, 22:00

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General

Target

143c4ad0066283f32c23d311e61c02e2.exe
Size

350KB
MD5

143c4ad0066283f32c23d311e61c02e2
SHA1

1ddfc575e32e6a35fdfee7df1bf8947d96c89bc4
SHA256

5d6441cca42e93d2697dee285c6636a9292dfd8c9e2414aea7ec07b84758d2f4
SHA512

b7daceae7088653a0ddfbd2fa2ed4bd5a89b2f5d9e9e821fda079de467b362e766b6ec287288a9d010ead5be46da32ad8b8126b73ca1e70822e2493e193cbe04
SSDEEP

6144:T4+FA+BAiMXHQur9MD7Lk9vtXyCLFlINvWLkNGPTd0owmYUUGO56pjPwjw:sW+iMXHknLSvtbDLkNG1w+UG6xw

Score

7^/10

bootkit persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2248	uninstall.exe

Loads dropped DLL 4 IoCs

pid	Process
2044	143c4ad0066283f32c23d311e61c02e2.exe
2248	uninstall.exe
2248	uninstall.exe
2248	uninstall.exe

Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	143c4ad0066283f32c23d311e61c02e2.exe
File opened for modification	\??\PhysicalDrive0	uninstall.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2248	uninstall.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2044	143c4ad0066283f32c23d311e61c02e2.exe
2248	uninstall.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 2248	2044	143c4ad0066283f32c23d311e61c02e2.exe	28
PID 2044 wrote to memory of 2248	2044	143c4ad0066283f32c23d311e61c02e2.exe	28
PID 2044 wrote to memory of 2248	2044	143c4ad0066283f32c23d311e61c02e2.exe	28
PID 2044 wrote to memory of 2248	2044	143c4ad0066283f32c23d311e61c02e2.exe	28
PID 2044 wrote to memory of 2248	2044	143c4ad0066283f32c23d311e61c02e2.exe	28
PID 2044 wrote to memory of 2248	2044	143c4ad0066283f32c23d311e61c02e2.exe	28
PID 2044 wrote to memory of 2248	2044	143c4ad0066283f32c23d311e61c02e2.exe	28

C:\Users\Admin\AppData\Local\Temp\143c4ad0066283f32c23d311e61c02e2.exe
"C:\Users\Admin\AppData\Local\Temp\143c4ad0066283f32c23d311e61c02e2.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Users\Admin\AppData\Local\Temp\uninstall.exe
  C:\Users\Admin\AppData\Local\Temp\uninstall.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Writes to the Master Boot Record (MBR)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2248

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\uninstall.exe

Filesize
45KB

MD5
56e8f04617f79f704f0fe6c1f5923b04

SHA1
d613871ddc8284e77e43e7667adb218388bf6eb7

SHA256
4b00db2c3e99e27a49c93eb339cc8c346dd42fac6f43be942b1bcc05fbfc11f6

SHA512
82af925382f369e33ea4b5363548a7818c90ecd6c1ee2b52b8040fc297603fce3e2b299a53ccfc60ea0628aeae715c29fe5e90a20881651d1d29d1a69ad0118b

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\Users\Admin\AppData\Local\Temp\uninstall.exe

Filesize
91KB

MD5
ee30ea1c167290153bdb61ecd9b3b590

SHA1
b20564a704b4075cf87dd85506599d2a20441274

SHA256
45498228c6e045de1dd22d4f285f0c0b51f85964075cf706c6f08e973408fff4

SHA512
e110e53824c1d5358911467339368eea31ee8eceefcc7f094acfc5fdc9fc008dd81b4f25c9abcccc2f5bdb9f85da188a73f25b840a28a13d4e337cac37fa0733

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\Users\Admin\AppData\Local\Temp\uninstall.exe

Filesize
93KB

MD5
dd936ea822082d05d3f330167b400aa8

SHA1
10a12a00fd2ca549e8f1f2b793146537b386c83e

SHA256
c53284dd0b0861218265c562a84ebef069dec3572226b74ded66f5ec3f90f985

SHA512
1f8c59cd99013e1c62dc5b9f648f1aa10f8ad0defe77ef7dd5dee94518ced2287a5d69ad1144686984ebaabc9b24309c98367037afd0f8ec143f7f0812a6f634

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\Users\Admin\AppData\Local\Temp\uninstall.exe

Filesize
350KB

MD5
143c4ad0066283f32c23d311e61c02e2

SHA1
1ddfc575e32e6a35fdfee7df1bf8947d96c89bc4

SHA256
5d6441cca42e93d2697dee285c6636a9292dfd8c9e2414aea7ec07b84758d2f4

SHA512
b7daceae7088653a0ddfbd2fa2ed4bd5a89b2f5d9e9e821fda079de467b362e766b6ec287288a9d010ead5be46da32ad8b8126b73ca1e70822e2493e193cbe04

Download Submit